Another option is the Big brake kits offered by Brembo.
My car with Brembo GT kit.
Pros with this kit
massive 13.02 X 1.25 two piece rotors.
Very large Brembo F40 4 piston fixed caliper.
Goodrich steel braided lines.
Looks great.
Brake pads are easy to change.
[Cons]
very high price for the kit. list price is $3595
high price for replacment rotors. New Brembo rotor rings list for $650 each.
High price for brake rotor mounting hardware. $120 list price.
Brake caliper will not clear most factory wheels.
Brake rotor will not clear the factory tie rod ends.
Brembo GTR brake kit
pros
GT-R monobloc calipers machined entirely from billet with a nickel plated race finish to provide both the features and benefits of a racing brake system.
This includes improved stiffness and thermo-mechanical resistance which is critical in high-performance applications.
Billet 5-axis Machined, Aerospace Aluminum-alloy, Monobloc Caliper construction.
Ventilated Stainless Steel Insert, Recessed Twin Seal piston design material.
14 inch rotors
6 piston calipers
cons
cost list price for a 2001 mustang Brembo GTR brake kit is $8395!!!!